Rail-anchor



A. L. STANFORD.

RAIL ANCHOR.

APPLICATION FILED APR. 30. 1920.

,Il/22H06:

UNITED STATES ARTHUR L. STANFORD, or CHICAGO, ILLINOIS.

RAIL-ANCHOR.

Application filed April 30,

To ZZ lwhom it 77mg/ concern Beit known that I, ARTHUR L. STAN-A rono, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Rail-Anchors, of which the following is a specification.

This invention pertains to the use of frictional material for increasing the grip between two sections of rail anchor with a view of preventing the sections from being misplaced when subjected to the intense vibration incident to the passing of heavy trains over the rails, so that when the sections are driven to place they will resist the forces tending to disengage the sections from one another.

The invention in the form shown is applied to the coacting surfaces of a rail anchor of the type which employs two members having a coacting tongue and groove which exert a wedging influence on one another, although the present invention is not limited to use in connection with this specific type of rail anchor.

The invention consists in the features of construction and combination of parts hereinafter described and claimed.

In the drawings:

Figure l is a sectional elevation of a rail having applied thereto an anchor embodying the features of the present; invention; and

Fig. 2 is a perspective view of the two rail anchor sections in disconnected relation.

The rail anchor as a whole comprises a main section 3 and a coacting section fl, the main section comprising a plate 5 having an overhanging jaw 6 adapted to engage one edge of a rail base, and a bearing foot 7 adapted to contact the front face of a tie. The main section is provided near its inner edge with an obliquely arranged groove 8 which coacts with an obliquely disposed tongue 9 on the companion section, which latter is provided at its edge with an overhanging jaw l0 adapted to engage the opposite flange of the rail base.

The groove 8 is provided with one or more pockets ll adapted to contain a frlctional or other gritty substance having a high coefficient' of friction. The inter-engaging tongued edge of the companion section is also provided with a series of holes or perforations 13 which are filled with a similar Specification of Letters Patent.

Patented July 20, 1920.

1920. sei-iai No. 377,805.

frictionalmaterial 14, which material may be sand or other gritty substance in its natural condition` or combined with a binder adapted to hold it permanently within the pockets and holes provided for its reception; or lin lieu thereof, the surfaces, either smooth or having pockets, depressions, corrugations, or other irregularities, may be coated with a frictional gritty substance held in place by some thin adhesive material. The principal object and purpose of employing an adhesive or binder is to maintain the frictional material in place until the sections of the rail lanchor have been united and driven vto clamping position on the rail, after which the engagement of the tongue and groove with one another will prevent the displacement of the frictional material.

In use, the two sections of the anchor are inter-engaged and placed in position to clamp the rail base, after which the main section is brought into position to have its foot in contact with the tie surface, and thereafter the companion section is driven to place by a sledge or hammer, the oblique relation of the tongue and groove serving to draw the edges tightly into clamping position upon the rail base. By providing a frictional material between the interlocking surfaces of the two sections, a retraction of the tongned member, even under the influence of excessive vibration, will be prevented, so that the rail grip will be permanently maintained.

Although the invention has been described in its application to a rail anchor of standard formation, having a tongue and groove interlocked, it will be understood that it is not the intention to limit the application of frictional material to a rail anchor of this type, since similar advantz'lgeous results can be secured in cases in which the interlock is effected and maintained by the use of separable wedges, nuts. calnlncfl sur.`aces or the like, in all of which cases friction is relied upon to maintain the parts in clamping relation. It will, therefore, be understood that the present invention has application to any case in which such interlocked relation of the members is main` tained by the action of friction.

I claim:

l. In a rail anchor, the combination of a plurality of members in interlocked relation, and a granular vsubstance having a high co-efcient of friction interposed bematerial interposed and maintained inthe irregularities of the surface for increasing the 'frictional engagementv of the sections, substantially as described.

3. In a rail anchor, the combination of a plurality or' interlocking sections having pockets or recesses in their inter-engaging faces, and frictional material entered into said pockets or recesses to increase the frictional action, substantially as described.

il. In a rail anchor, the combination of` interlocking sections and a gritty substance interposed between the engaging i'aces of the interlocking sections to increase the frictional effect, substantially as described.

5. In a rail anchor, the combinationoi' a Y pair of gripping sections, one of the sections being provided with an obliquely disposedV i groove, and the other section being Vprovided being provided with an interlocking '.tongue,

and a frictional material located Within the recesses in the groove, substantially as described. f Y l v 7. In a rail anchor, the combination of a pairy of gripping sections, one of the sections being provided'with an obliquely disposed groove, and the other section being provided with an obliquely disposed tongue, the surface of the groove being provided with recesses, and the tongue being provided with holes or openings, Vand Vfrictional material Within the recesses and Vholes or openings to increase the rictional effect, substantially as described.

Y ARTHUR L. STANFORD.V 

